Hi:
It seems to be your AOR mail is missed. Some of the members here also have faced similar situation.
I guess you no need to worry about it. As long as it is showing online status, it confirms that your file is under review. Even if you need to apply for BOWP also, take a screen shot of your online status.
Apply for BOWP with this screen shot and covering letter explains about this situation. I am sure using your UCI no, they can confirm that you applied for PR and the initial screening is completed.
Plz seniors confirm.
All the best.